Vapour: Remove sDisabled with inlined string

Inlined disabled selector since it is single use and is still shorter
than the minified result.
Merge pull request #3489 from nschonni/v4-remove-vapour-sDisable

Vapour: Remove sDisabled with inlined string
Toggle: add ability to toggle details elements

1. Added "toggled.wb-toggle" event that triggers once toggle complete.
2. Added toggleDetails method to open/close details elements.
3. Updated working examples with toggle details.